v3.26.1
REVENUE Capitalized Contractual Cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Oct. 31, 2025
Capitalized Contract Cost [Line Items]          
Capitalized Contract Cost, Amortization $ 22 $ 15 $ 44 $ 29  
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent          
Capitalized Contract Cost [Line Items]          
Capitalized Contract Cost, Net $ 44   $ 44   $ 44